I am trying to build Unreal Engine/NVidia Funhouse Project.
Most of the builds succeeded but some of them failed all with LNK2019 erros like this one:
Error LNK2019 unresolved external symbol NvAPI_D3D11_CreateGeometryShaderEx_2 referenced in function
I believe that this is because i did not set nvapi.lib in the linker as explained on these 2 places:
So I right clicked on the UE4 project, then I opened the properties menu, and tried to find the place in visual studio to add the library as in this example.
But I don’t have most of those menus.
All I have in my project are:
General
Debugging
VC++ Directories
NMake
Screenshot attached. Can anyone tell me where I can find the linker or how I can add NVApi.lib
Thank You! I would really like to learn more about UBT and working with Build.cs files. Could you point me to the best resource to study this?
I took a quick look at the project and
I found this NVAPI.Build.cs file under C:\Users\Colorado\Desktop\UnrealEngine-VRFunhouse-4.11\Engine\Source\ThirdParty\NVIDIA
vapi
here is what it says:
// Copyright 1998-2016 Epic Games, Inc. All Rights Reserved.
using UnrealBuildTool;
public class NVAPI : ModuleRules
{
public NVAPI(TargetInfo Target)
{
Type = ModuleType.External;
string nvApiPath = UEBuildConfiguration.UEThirdPartySourceDirectory + "NVIDIA/nvapi/";
PublicSystemIncludePaths.Add(nvApiPath);
if (Target.Platform == UnrealTargetPlatform.Win64)
{
string nvApiLibPath = nvApiPath + "amd64/";
PublicLibraryPaths.Add(nvApiLibPath);
PublicAdditionalLibraries.Add("nvapi64.lib");
}
else if (Target.Platform == UnrealTargetPlatform.Win32)
{
string nvApiLibPath = nvApiPath + "x86/";
PublicLibraryPaths.Add(nvApiLibPath);
PublicAdditionalLibraries.Add("nvapi.lib");
}
}
}
I confirmed that those files do exist on those paths.
Does this mean that the linker is in fact properly configured to include nvapi.lib?
OK I got all the compiler errors to disappear. And thank you Bruno for your input it was very helpful in showing me the root of the problem.
For some reason, I needed to manually replace the nvapi.lib file after the setup was complete
as described by GalaxyMan2015 in this thread https://forums.unrealengine.com/showthread.php?76657-Errors-while-compiling-VXGI
Following those instructions that got rid of all of the LNK2019 build errors.
I would like to learn more about how UBT works if you could point me in the right direction for the best documentation it would be greatly appreciated.
I don’t know of any docs about this; we are all in the dark, what I do is read through the Builder Tool module in engine source and go lurking inside of plugins that are published by default in Engine/Plugins folder.
I just signed in and am posting for the first time ever in UE forums to say Thank You!
I just started messing with UE4 the other day and was not able to figure this out until I found this thread.
My project now builds after recopying the Engine/Source/ThirdParty/NVIDIA/nvapi directory.
I’m not sure if it was the cause, but I specifically cloned the funhouse branch directly, instead of the whole repo.